Back to Fluid Compatibility
Ammonia, Gas (Hot)
Data is at 70°F (21°C) unless otherwise noted in the chemical name.
Metal
13 materials| Material | Rating | Meaning |
|---|---|---|
| Aluminum | — | No data — the source publishes no rating for this pair. Not a compatibility claim; verify independently. |
| Carbon Steel | — | No data — the source publishes no rating for this pair. Not a compatibility claim; verify independently. |
| Cast/Ductile Iron | — | No data — the source publishes no rating for this pair. Not a compatibility claim; verify independently. |
| 304 Stainless Steel | — | No data — the source publishes no rating for this pair. Not a compatibility claim; verify independently. |
| 316 Stainless Steel | — | No data — the source publishes no rating for this pair. Not a compatibility claim; verify independently. |
| Hastelloy C | — | No data — the source publishes no rating for this pair. Not a compatibility claim; verify independently. |
| Brass | D | Not recommended — unsatisfactory / do not use |
| Alloy 20 | A | Excellent — fully compatible |
| Alloy 40 (Monel) | B | Good — minor effect, generally suitable |
| Titanium | — | No data — the source publishes no rating for this pair. Not a compatibility claim; verify independently. |
| Duplex 2205, Cd4MCu | — | No data — the source publishes no rating for this pair. Not a compatibility claim; verify independently. |
| XM-19 Spring Steel | — | No data — the source publishes no rating for this pair. Not a compatibility claim; verify independently. |
| 410 Stainless Steel | — | No data — the source publishes no rating for this pair. Not a compatibility claim; verify independently. |
Legend:AExcellentBGoodCFair to PoorDNot recommended—No data
Important Engineering Disclaimer:
Compatibility data is a preliminary screening guide only. Verify against actual concentration, operating temperature and pressure, fluid impurities, velocity/erosion, corrosion allowance, gasket seating stress, mechanical seal arrangement, vendor recommendations, applicable code, project specification, and the current Safety Data Sheet before engineering use. Ratings reflect Graco Chemical Compatibility Guide (Updated 10/29/2024) and are not a current SDS/GHS classification.